Commit 60f24784 authored by Avi Kivity's avatar Avi Kivity
Browse files

KVM: Optimize kvm_mmu_unprotect_page_virt() for tdp 



We know no pages are protected, so we can short-circuit the whole thing
(including fairly nasty guest memory accesses).

Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 5dadbfd6

arch/x86/kvm/mmu.c

+3 −0
Original line number Diff line number Diff line
@@ -2694,6 +2694,9 @@ int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva) 
	gpa_t gpa;

	int r;



	if (tdp_enabled)

		return 0;



	gpa = vcpu->arch.mmu.gva_to_gpa(vcpu, gva);



	spin_lock(&vcpu->kvm->mmu_lock);